TY - JOUR
T1 - Comparison of catalytic performance of different types of graphene in Li-O2 batteries
AU - Park, Jung Eun
AU - Lee, Gwang Hee
AU - Choi, Mingu
AU - Dar, Mushtaq Ahmad
AU - Shim, Hyun Woo
AU - Kim, Dong Wan
N1 - Funding Information:
This research was performed as a cooperation project supported by the Korea Research Institute of Chemical Technology . This research was also supported by the Korea Small and Medium Business Administration ( S2230272 ) and by the R&D Center for Valuable Recycling (Global-Top R&BD Program) of the Ministry of Environment ( 2014001170002 ).
PY - 2015/7/1
Y1 - 2015/7/1
N2 - We report comparative catalytic studies of two types of commercial graphene nanoplatelets as electrode materials with different physical properties for Li-O2 batteries. The graphene nanoplatelets were characterized by field-emission scanning electron microscopy, transmission electron microscopy, N2 physisorption, X-ray photoelectron spectroscopy, and Raman spectroscopy. The electrochemical performance of the graphene nanoplatelets, which have large pore volume density, large pore diameter, and high population of defect sites, was evaluated using galvanostatic discharge-charge cycling and a depth-of-discharge test. Higher specific capacity of the Li-O2 battery was achieved when graphene nanoplatelets were used as an electrode material; this specific capacity could be associated with pore volume density, pore diameter, and number of defects in the graphene nanoplatelets.
AB - We report comparative catalytic studies of two types of commercial graphene nanoplatelets as electrode materials with different physical properties for Li-O2 batteries. The graphene nanoplatelets were characterized by field-emission scanning electron microscopy, transmission electron microscopy, N2 physisorption, X-ray photoelectron spectroscopy, and Raman spectroscopy. The electrochemical performance of the graphene nanoplatelets, which have large pore volume density, large pore diameter, and high population of defect sites, was evaluated using galvanostatic discharge-charge cycling and a depth-of-discharge test. Higher specific capacity of the Li-O2 battery was achieved when graphene nanoplatelets were used as an electrode material; this specific capacity could be associated with pore volume density, pore diameter, and number of defects in the graphene nanoplatelets.
KW - Catalytic performance
KW - Electrochemical performance
KW - Graphene
KW - Li-O batteries
KW - Pore volume
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U2 - 10.1016/j.jallcom.2015.05.200
DO - 10.1016/j.jallcom.2015.05.200
M3 - Article
AN - SCOPUS:84933518825
SN - 0925-8388
VL - 647
SP - 231
EP - 237
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -